WARNING: To prevent personal injury, prepare the area and observe all materials-handling procedures when transporting a battery module. Battery modules weigh 20 kg (44 lb).

NOTE: Replace all battery modules at the same time with the same type of batteries originally installed in the UPS.

Battery care and storage guidelines

•Minimize the amount of time the UPS uses battery power by matching the UPS configuration with the utility voltage. Refer to "Configuring the UPS (on page 32)."

•Keep the area around the UPS clean and dust-free. If the environment is very dusty, clean the outside of the UPS regularly with a vacuum cleaner.

•Maintain the ambient temperature at 25°C (77°F).

•If storing a UPS for an extended period, recharge the batteries every 6 months:

CAUTION: Because of the short shelf life of the batteries, avoid storing a battery spare as a backup. Do not maintain an inventory of spare batteries on site unless a procedure to keep these batteries charged while in storage is implemented.

a.Connect the UPS to utility power.

b.Allow the UPS to remain in Standby mode.

c.Allow the UPS to charge the batteries for at least 24 hours.

d.Update the battery recharge date label.

UPS battery replacement procedure

The battery modules are hot-swappable and can be replaced without powering down the UPS.

IMPORTANT: The UPS continues to run while the batteries are replaced and shows the battery disconnected alarm. This alarm clears automatically when the batteries are reconnected.

To remove the component:

1.Remove the UPS front bezel.

Maintenance 39